On Tue, 2005-07-26 at 17:34 -0600, Robert Hancock wrote: > > In a nutshell, sometimes, the PIT/TSC timer runs 3x too fast [1]. That > > causes many issues, including DMA errors, MCE, and clock running way too > > fast (making the laptop unusable for any software development). So far, > > no BIOS update was able to fix the issue for me. > > Shouldn't this be looked into further rather than adding this > workaround? Surely Windows is using the PIT as well, so there must be > some way to get it to behave properly..
Surely, but I've been desesperatly trying to find the cause w/out success for months. My first idea was that the BIOS doesn't set the CPU voltage properly at boot, so I made up a patch that sets the right fid/vid before any calibration but that didn't help. The BIOS is wrong (ie the BIOS reports a 1/3 of the actual CPU speed), memtest86+ which doesn't use any ACPI or whatever reports wrong time too, so it's definitely not a Linux bug. My guess is that Windows reinitialize some register but it's hard to tell. Cheers, Olivier. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/